2026-10-11T19:21:55Z https://www.scidb.cn/oai

10.57760/sciencedb.37657 2026-05-21T13:59:35Z

2026-05-21 black hole simulated data doi:10.57760/sciencedb.37657 en Select four types of black hole models with different morphological structures, namely Ring, Crescent, Disk, and Double, as observation models, and simulate observations based on the software package eht imaging published by the EHT collaborative organization to generate corresponding interferometric visibility data. To ensure that the generated simulated data samples in the spatial frequency domain are consistent with real observations, the UV coverage corresponding to the low-frequency measured data published by EHT on April 5, 2017 is used for sampling during the simulation observation process. By performing Fourier transform on the brightness distribution of the model to calculate theoretical visibility, and extracting corresponding frequency domain information at real UV sampling points, simulated visibility data with real array geometric features can be obtained. On this basis, further thermal noise and system error models are added to simulate the actual observation environment more realistically. In addition, to maintain consistency in observation conditions, the polarization ratio is uniformly set to 0.40 and the polarization coherence length is 5uas. The resolution of the model image is set to 512 × 512 pixels, the field of view is 1024uas, and the center position of the image is aligned with the real observation data.  black hole; simulated observation; EHT wu dao sheng EMBARGO https://creativecommons.org/licenses/by/4.0/ dataset Science Data Bank